Concrete-mixer.



No. 838,439. PATENTED DEC. 11, 1906 s. A. MoGILL.

CONCRETE MIXER.

APPLICATION FILED DEOA. 1905.

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SYDNEY A. MoGILL; OF BOWEN. ILLINOIS.

CONCRETE-MIXER.

, Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed December 4, 1905. Serial No. 290.211

To (LZZ whom it may concern:

Be it known that I, SYDNEY A. MGGILL, a citizen of the United States, residing at Bowen, in the county of Hancock, State of Illinois, have invented certain new and useful Improvements in Concrete-Mixers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to concrete-mixers, and has for its object to provide a mixer of the revoluble-drum type, which will be extrentely si ple and by means of which con crete may be easily and quickly mixed.

Another object is to provide a mixer, including means for preventing the adherence of concrete to the inner surface of the drum.

Other objects and advantages will be apparent from the following description.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a rear elevation of the present mixer. Fig. 2 is a vertical section on line 2 2 of Fig. 1, the door being in closed position and shown in its open position in dotted lines. Fig. 3 is a side elevation.

Referring now to the drawings, the present invention comprises a pair of shafts 5, adapted for the reception of a draft-animal therebetween, and having a connecting-brace 6, upon which a whiflietree 7 is pivoted. Journaled horizontally between the rearward ends of the shaft there is a transversely-extending hollow drum 8, having a longitudinal opening 9 in its periphery and extending throughout the length of the drum, the edges of the peri heral wall at the sides of the opening being inwardly divergent, as shown at 10. A transversely arcuate closure 11 is hinged to the peripheral wall at one side of the opening 9 and is movable into and out of position to close the opening. Means 1.2 is provided for holding the closure in operative position and is located in a recess 13, formed in the outer surface of the peripheral wall, the fastening means thus lying out of position for engagement of the surface over which the drum is moved. By reason of the fact that the edges of the closure 11 are beveled to fit against the inwardly-divergent edges of the peripheral wall a tight union of the closure with these edges is formed, and these edges support the door against movement under pressure from within the drum, so that little or no strain is placed upon the fastening means 12.

Transversely-spaced uprights 14 are secured to the shafts 5, located at opposite ends of the drum 8, and these uprights are con neeted at their tops by a cross member 15 and are braced by rods 16, which. extend downwardly therefrom to the brace 6. The uprights 14 are provided with slots, the walls of which form guides 17 in their mutually adjacent faces, which receive the ends of a horizontal shaft 18, and depending from this shaft there is a hammer-block 19. Wheels 20 are journaled upon the shaft 18 outwardly of the hammer-block and extend downwardly over the ends of the drum 8, and extending upwardly from the shaft 18 there is a rod 21, which is slidably engaged in an opening 22, formed in the top member 15.

The rod 21 is threaded, and has a nut 23 engaged therewith below the member 15, and pivotally connected at their lower ends are arms 24, which extend upwardly and outwardly to the uprights 14, to which they are attached. A helical spring 25 is engaged with'the rod 21 between the arms 24, the rod being slidably engaged in these arms and the nut 23, and thus holds the hammer-block 19 yieldably against downward movement and in slight spaced relation to the periphery of the drum 8.

Vertical rollers 26 are journaled upon the outer surfaces of the ends of the drum 8 and are disposed in circles concentric with the axis of the drum, and the wheels 20 extend downwardly into the paths of movement of these rollers for engagement thereby. It will thus be apparent that as the mixer is moved over the ground the drum 8 will be revolved and the rollers 26 will be brought successively into engagement with the wheels 18 to raise the latter, and therewith the block 19, against the action of the gravity; As each of the rollers passes beyond its respective wheel 18 the block 19 will move downwardly under its own weight, and the impetus of the block will further move it against the action of the spring 25 into engagement with the peripheral wall of the drum, thus loosening therefrom any matter adhering to the inner surface thereof. The spring 25 will then raise the block out of engagement with the drum and hold it, awaiting engagement of its wheels by the next roller 26.

Secured within the drum there are longitudinally-extending angle-plates A, which receive the contents of the drum thereagainst to aid in the agitation thereof, it being understood that concrete to be mixed is disposed within the drum and that the latter is then rolled over the ground to the point at which the concrete is to be used.

What is claimed is 1. In a concrete-mixer, the combination with a revoluble concrete-receiving drum, of uprights located at oppositeends of the drum, a hammer slidably mounted between the uprights for movement towardand away from the drum, a spring arranged to hold the hammer normally in spacedrelati'on to the drum, wheels carried by the hammer and eX- tending inwardly over the ends of the drum, and rollers carried by the ,drum and arranged for engagement of the wheels when the drum is revolved, to move the hammer against the action of gravity, said hammer being ar ranged for movement into engagementwith the drum against. the action of the firstnamed spring under impetus imparted there- I to by gravity. v v

2. In a concrete-mixer, the combination with a revoluble concrete-receiving drum, of

shafts connected with the drum, uprights y carried by the shafts at opposite ends of the drum, said uprights having guide-slots formed therein, a shaft engaged at its ends in the guideslots for vertical movement toward and away from the drum, a hammer-block carried by the shaft, rollers carried by the ends of the drum, wheels carried by the ends of the shaft and extending into the paths of movement of the rollers, and guide-arms carried by the uprights abovethe hammer-block, a rod connected with the shaft and extending upwardly through the guid'e arms, a cross memher for the uprights, said rod being slidably engaged in the cross member, a nut adjust ably engaged upon the rod, and 'a spring engaged wlththe rod between the guide-arms and the nut and arranged to hold the rod with the hammer-block normally in spaced relation to the drum.

In testimony whereof I afliX my signature in presence of witnesses.

SYDNEY A. MoGILL.

VVit'nesses:

ENooH H. FLEMING, GEO. W. NASH, CHARLES CROSSLAND. 

